Axis Types

1import {
2    CategoryAxis,
3    DateTimeNumericAxis,
4    EFillPaletteMode,
5    EStrokePaletteMode,
6    EAutoRange,
7    EAxisAlignment,
8    ELabelAlignment,
9    ENumericFormat,
10    FastColumnRenderableSeries,
11    FastLineRenderableSeries,
12    IFillPaletteProvider,
13    IStrokePaletteProvider,
14    IPointMetadata,
15    IRenderableSeries,
16    LogarithmicAxis,
17    MouseWheelZoomModifier,
18    NumericAxis,
19    NumberRange,
20    parseColorToUIntArgb,
21    SciChartSurface,
22    TextLabelProvider,
23    Thickness,
24    XyDataSeries,
25    ZoomExtentsModifier,
26    ZoomPanModifier,
27} from "scichart";
28
29import { appTheme } from "../../../theme";
30import { TBinanceCandleData } from "../../../TBinanceCandleData";
31
32const colorStrings = [
33    appTheme.VividSkyBlue,
34    appTheme.VividPink,
35    appTheme.MutedTeal,
36    appTheme.VividOrange,
37    appTheme.VividBlue,
38];
39const colors = colorStrings.map((c) => parseColorToUIntArgb(c + "AA"));
40
41export const drawExample = async (rootElement: string | HTMLDivElement) => {
42    // Create a SciChartSurface with Theme
43    const { sciChartSurface, wasmContext } = await SciChartSurface.create(rootElement, {
44        theme: appTheme.SciChartJsTheme,
45    });
46    const labelProvider = new TextLabelProvider({
47        labels: ["Bitcoin", "Ethereum", "XRP", "Cardano", "Dogecoin"],
48    });
49    // Category Axis - measures using index not value.
50    const xAxis = new CategoryAxis(wasmContext, { id: "XCategory", labelProvider });
51
52    xAxis.labelStyle.fontSize = 18;
53    xAxis.labelStyle.alignment = ELabelAlignment.Center;
54    xAxis.labelStyle.padding = new Thickness(2, 1, 2, 1);
55    // Allow rotated labels to overlap
56    xAxis.axisRenderer.hideOverlappingLabels = false;
57    // Keep first and last labels aligned to their ticks
58    xAxis.axisRenderer.keepLabelsWithinAxis = false;
59    xAxis.axisTitle = ["Top 5 Coins - Category Axis", "Custom labels using TextLabelProvider"];
60    xAxis.axisTitleStyle.fontSize = 14;
61
62    sciChartSurface.xAxes.add(xAxis);
63
64    // Numeric Y-Axis. measures using value
65    const yAxis = new NumericAxis(wasmContext, {
66        id: "YNumeric",
67        autoRange: EAutoRange.Always,
68        labelPrefix: "$",
69        labelPostfix: "B",
70        labelPrecision: 0,
71        axisAlignment: EAxisAlignment.Left,
72        labelStyle: { fontSize: 14 },
73    });
74    // Pass array to axisTitle to make it multiline
75    yAxis.axisTitle = ["Market Cap - Numeric Axis", "formatting using prefix and postfix"];
76    yAxis.axisTitleStyle.fontSize = 14;
77
78    sciChartSurface.yAxes.add(yAxis);
79
80    const columnSeries = new FastColumnRenderableSeries(wasmContext, {
81        strokeThickness: 0,
82        dataPointWidth: 0.5,
83        paletteProvider: new AxisTypesPaletteProvider(),
84        xAxisId: xAxis.id,
85        yAxisId: yAxis.id,
86    });
87    sciChartSurface.renderableSeries.add(columnSeries);
88
89    const dataSeries = new XyDataSeries(wasmContext);
90    dataSeries.appendRange([0, 1, 2, 3, 4], [380.9, 162.1, 23.87, 14.56, 8.372]);
91    columnSeries.dataSeries = dataSeries;
92    const endDate = new Date(2022, 10, 5);
93    const startTime = endDate.getTime() / 1000 - 500 * 7 * 24 * 60 * 60;
94    const dateXAxis = new DateTimeNumericAxis(wasmContext, {
95        axisAlignment: EAxisAlignment.Top,
96        id: "XDate",
97        labelStyle: { fontSize: 18 },
98        axisTitle: ["Date Axis", "Auto formats based on the date range"],
99        axisTitleStyle: { fontSize: 18 },
100        visibleRangeLimit: new NumberRange(startTime, endDate.getTime() / 1000),
101    });
102    sciChartSurface.xAxes.add(dateXAxis);
103
104    // Logarithmic Y Axis - measures on log scale using value
105    const logYAxis = new LogarithmicAxis(wasmContext, {
106        id: "YLog",
107        logBase: 2,
108        labelFormat: ENumericFormat.SignificantFigures,
109        labelPrefix: "$",
110        axisAlignment: EAxisAlignment.Right,
111        labelStyle: { fontSize: 14 },
112        axisTitle: ["Price - Logarithmic Axis", "base 2, labelFormat: SignificantFigures"],
113        axisTitleStyle: { fontSize: 14 },
114    });
115    sciChartSurface.yAxes.add(logYAxis);
116
117    const symbols = ["BTCUSDT", "ETHUSDT", "XRPUSDT", "ADAUSDT", "DOGEUSDT"];
118    for (let index = 0; index < symbols.length; index++) {
119        const symbol = symbols[index];
120        const priceDataSeries = new XyDataSeries(wasmContext, { dataSeriesName: symbol });
121        const series = new FastLineRenderableSeries(wasmContext, {
122            id: symbol,
123            strokeThickness: 3,
124            xAxisId: dateXAxis.id,
125            yAxisId: logYAxis.id,
126            stroke: colorStrings[index],
127            dataSeries: priceDataSeries,
128        });
129        sciChartSurface.renderableSeries.add(series);
130
131        (async () => {
132            const response = await fetch(
133                `/api/get-binance-candles?interval=1w&symbol=${symbol}&limit=500&endTime=${endDate}`
134            );
135            const data: TBinanceCandleData = await response.json();
136            priceDataSeries.appendRange(data.xValues, data.closeValues);
137            sciChartSurface.zoomExtents();
138        })();
139    }
140
141    sciChartSurface.chartModifiers.add(
142        new ZoomPanModifier({ includedXAxisIds: [dateXAxis.id], includedYAxisIds: [logYAxis.id] }),
143        new MouseWheelZoomModifier({ includedXAxisIds: [dateXAxis.id], includedYAxisIds: [logYAxis.id] }),
144        new ZoomExtentsModifier()
145    );
146
147    return { sciChartSurface, wasmContext };
148};
149
150class AxisTypesPaletteProvider implements IStrokePaletteProvider, IFillPaletteProvider {
151    public readonly strokePaletteMode = EStrokePaletteMode.SOLID;
152    public readonly fillPaletteMode = EFillPaletteMode.SOLID;
153
154    // tslint:disable-next-line:no-empty
155    public onAttached(parentSeries: IRenderableSeries): void {}
156
157    // tslint:disable-next-line:no-empty
158    public onDetached(): void {}
159
160    public overrideFillArgb(xValue: number, yValue: number, index: number): number {
161        return colors[xValue];
162    }
163
164    public overrideStrokeArgb(
165        xValue: number,
166        yValue: number,
167        index: number,
168        opacity?: number,
169        metadata?: IPointMetadata
170    ): number {
171        return undefined;
172    }
173}
174